Sealing-pack.



E. D. GHELLIS, DEGD.

e. L. BROOK-S, ADMINISTRATOR.

SEALING PACK.

APPLIOATION FILED MAR. 23, 1911.

1,11 5,506. Patented Nov. 3, 191

. STATES PATENT. orric EUEEENE ll). CHELIQIS, OF PORTLAND, MAINE; GERRY L. BROOKS, ADMINISTRATOR OF SAID OHELLIS, DECEASED, ASSIGNOR TO NATIONAL METAL SEAL CORPORATION, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

SEALING-PACK.

To all whom it may concern Be it knownthat I, EUGENE D. GHELLis, a citizen of the United States, residing at Portland, county ;of Cumberland, State of Maine, have invented certain new and useful Improvements in Sealing-Packs, of which the following is a specification.

.My present invention relates to scaling packs, or sealing closures, and particularly to a pack for a containing vessel.

There are many materials and substances which are very difficult to put up tight on account of their physical properties. This is especially true of certain fluid substances which seem to have a remarkable power of penetration and permeation. Certain of these liquids have heretofore been found almost impossible to seal with absolute tightness or, if such sealing has been possible, it has only been accomplished at great expense and under conditions of' the utmost care.

My presentinvention is based on'adiscovery by which I am able to successfully seal the most difficult of these substances and, at thesame time, I am able to produce packs which offer great advantages in'the Way of use and, furthermore, to provide them at a' minimum cost. The general feature of my'invention resides in the utilization of a cell for resisting the penetrating efiects of the substances which are to be packed. This cell contains a dead air space and is so constructed as to retain its form and be finally seated on the vessel mouth in such complete contact as to avoid leakage.

In the specification which follows, I will more fully describe my invention, setting forth as illustrative thereof a form of seal which i have foundeifective in actual'practice and which wellillustrate's the principles of my invention. This form of seal I have illustrated in the drawings, reference being had to the various parts thereof correspondingly employed by numerals throughout.

In these drawings :I?igure 1 shows a sectional View of an inverted containing vessel provided with my seal, inclos ing an in dicated liquid con-tents, Fig. 2 isa view ofone face of such a seal with the interior construction indicated in dotted lines, and Fig. 3 is an edge view of the same.

In construction, my seal is preferably Y Specification of Letters Patent.

' ljaitented Nov; 3, 1914:.

Application filed March 23, 1911. Serial No. 616,539.

formed with an annular frame or ring 1 of some slightly springy material, such as pulp 01' fiber. The frame 1. therefore, constitutes an inclosing wall of substantial thickness and is preferably formed of substantially the size of the mouth of the containing vessel, which is indicated at 2.

On each side of this frame 1 I mount Walls 3 and l. These may be formed of thin paper disks asted on each side; ,of the frame '1 and 'orming within a cell This cell 5 forms .a dead air space, preferably of ust the size and shape of the vessel mouth 2, so that the liquid contents, as indicated at 6, will bear evenly on it at all points. Furthermore, when it is desired to have access to the contents 6 the walls 3 and 4 may becut out or ruptured within theinclosure of the frame 1, thus giving free access'to the contents.

It will be seen that the frame or ring 1 is, therefore,trus sed, as it were, by the paper 'on both of its sides. The paper on each side may be considered as having an infinite vessel month, which may be somewhat irregular without the wrinkling or springing of the seal.

It is found by actual use that a pack constructed as shown will successfully resist even such a substance as formaldehyde, furniture polish and lacquer, which are fairly characteristic in their properties of those materials and substances which are most difficult to successfully closure.

Various cell constructions may. of course. be made and packs of various sizes and shapes may be used and a variety of mate rial both for frame and for cell wall. may e employed. I have found that with the cell construction ordinary paper. u'nglazed. un-

filled and with no preparing on the surface at all may be used. v

The modifications above suggestedfi and various Other changes of form ag'e all considered as within the limits of my, present invention if covered by the appended claims. vVhaC' I, therefore, claim and desire to secure by Letters Patent is 1. A seal for the mouth of a containing vessel comprising an annular pack having a delivery opening and a permeable paper disk on each side of said pack forming an internal air cell coextensive with said delivery openlng, 

